Metal vestibule-diaphragm.



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APPLICATION FILED FEB-,12. 1915.

Patented 00h19,

I.|IIIIII.

UNTTED sTATns PATENT oir-Fica.

THOMAS H. BUSSUM, OF BALTIMORE, MARYLAND.

METAL VESTIBULEDIAPHRAGM.

passenger trafiic is the so-called vestibule diaphragm connected atealngend of the cars. generally been of the accordion type, which haveconsisted of heavy ply fabric folded or stitched in variousways to forman expandi'ble structure. It is essential in this type of device thatnot only a weatherproof construction be provided, but also one notliable to rattle and become noisy when subjected to the hard servicerequired. Heretofore the most successful type of noiseless vestibulediaphragm has been that made of fabric or other similar material, butthese have proved expensive to manufacture'and maine tain.

Thisin'vention, however, relates to a telescoping metal diaphragmconstructed to be effectually sealed in various positions of adjustment,thoroughly impregnable to the weather, and, as well, operatingnoiselessly.

It is an object therefore of this invention to construct a telescopingmetal car diaphragm embracing metal sections -slidably mounted one uponanother and bearing resiliently against one' another upon suitablesealing means So as to permit warping movements ofthe diaphragm to takeplace Without causing an opening to occur between the It is also anobject of this inventionfto construct a car diaphragm comprisin/g afixed arched section rigidly secured on the end of a car with a largersimilarly shaped section fitted thereover and adapted to telel scopethereon, the top 'and side members of said latter member being flexiblymounted, and. having resilient means associated there with to cause 'thesame to bear yieldably upon said fixed arched section.

It is also an object of this invention to construct a telescoping carvestibule diaphragm embracing sections interfitting with Specificationof Letters Patent. Application led February 12, 1,9154. Serial No.7,819.

In the past such dia'phragms have' Patented Oct. 19, 1915.

one another and having-'a sea-ling strip inserted therebetween withresilient mechanism for holding the sections associated with saidsealing strip compressed therebetween. It is furthermore an importantobject of this invention to construct a telescoping car vestibulediaphragm made up of metal sections and ywith resilient means associatedtherewith to hold said metal sections impelled against one another insealing relation.

It is finally an object of thislinvention to construct an improved typeof car vestibule diaphragm consisting of few parts made of metal so asto be impervious to the weather and possessing many advantages ofdurabilityv over constructions heretofore used.

The invention ,(in a preferred form) is 'illustrated in the drawings andhereinafter more fully described.

In the drawings: Figure 1 is a fragmentary side elevation partly brokenaway and shown in section illustrating a car vestibule diaphragmembodying the principles of my invention.` Fig. 2 is a section .takenona horizontal plane at the end of al Car'with a vestibule diaphragmembodying the principles of my invention'attached thereon.' Fig. 3 is afragmentary detail section taken on line 3-.3 of Fig. l. Fig. 4 is adetail section taken on -line H of Fig. 3. Fig. 5 isa view of amodification of my invention.

As shown in the drawings: The reference numeral 1, indicates as a wholethe end platform of a car having a vestibule platform extension2, andendWalls 3, which extend vertically from the sides ofthe car toward thevestibule extension of the platform in convergent relation. Anl archedopening is afforded between said respective convergent end walls 3, ofthe car, and secured there` vparts and also insuring silence ofoperationywsectiiii having an extending flange 5,

saidarched vestibule section 4, is a similarly shaped outer sectionconsisting of a curved top piece 6, and straight side members 7, andjoined to said curved top piece 6, are

stiff leather or fabric aprons8, which extend l downwardly and overlapthe upper ends of the side members 7 f Said curved top piece 6, and sidemembers 7 are all positively supaov tion.

according` to the portedv upon the face plate 9, of the vestibule, saidtop and side members being hingedly connected thereto by hinges 10 and11, respectively. As stated, the ysectional outer telescoping section ofthe vestibule lits over and around the stationary section 4, and therespective-hinged members of said telescoping section are normally 4impelled inwardly closely upon and toward said stationary .archedsectionby means of springs 12, which are associated with said respective hingedmembers 10 and 11. Interposed between the spring impelled members 6 and7,

of the outer vestibule section and the inner stationary section 4, is astrip of felt or other weatherstripping material 13, which may beattached to either one. of the telescoping sections constituting thevestibule, but as' shown is secured near the edge of said stationaryarched section on the exterior thereof, thus sealing the space betweensaid respective sliding'sections.

4 In the modification illustrated in Fig. 5, I have shown a stationaryvestibule section 19,'similar to the section 4, previously described,and secured -to thexface plate V9, is al resilient plate 20, bearing atits inner end against the ,Weatherstripping element 21, se-

cured on the inner surface of the stationary section 19.

lThe operation is asfollows: The relative movement permitted between therespective stationary and movable vestibule sections is one telescopicin action, but due to the fact that the`movable section 4is made up of aplurality of memberslwhich. are resiliently impelled into-Weathertightcontact with the' stationary section, a' certain amount of angularmovement is permitted which is neces sarily imposed upon the devicewhenthe train is in motion. The vestibule faceplate `upon which therespective .top and side members of the movable vestibule section areconnected, affords a substantial support therefor. 'The resilientcontact between the movable member and the stationary member of thediaphragm affords not only a weather-tight construction, but also onesilent in operation and free from objectionable noise and rattling whenthe Ytrain is in moof the device constructed The operation modificationlillustrated in 5 is practically identical, that is, a stationaryvestibule member is provided which coacts with a movable member.l Asshown in Fig. 5, the movable member vis provided with resilient memberswhich bear 'against purpose'limiting the patent granted otherwise thannecessitated by the I prior art.

I claim asmyinventionz' 1. In a vestibule .liaphragm of the classdescribed, a statief-ary section, a section tel- ,escoping therewith attop `and sides, and

means holding one of said sections yieldably against the othersection'atall points.

2. In a vestibule diaphragm` of the class described, a stationarysection,a section tele'- scoping therewith at means holding saidagainst-said stationary section at all points.

3. In a vestibule di'aphragmof the class described, an 'innerstationary@ section, an outer section fitting thereover ati the top. and

the top and sides, andv latter section fyieldably sides and adapted 4toslide thereon, said outer section comprising -a plurality of springimpelled members bearingv yieldably upon the outer surface-of said innermember at all points. 1

.4. In a device' of the class described, the combination with astationary Asection comprising top and sides, of a similar movable`section intertting therewith,` and hinged connections on the top andside of said movable section spring-pressedto'ward said sta'- tionarysection to permit an angular movement between said sections.

5.'In a device of the class described, 'a stationary inverted U section,and a movable inverted U section coacting therewith, said movablesection comp-rising top and side hingedly mounted spring-pressed membersmovable .independently of one another.

In testimony whereof I have hereunto subscribed my name in the presenceof two subscribing witnesses.

THoMAs, H. BUSSUM. Witnesses:

copies nf'this patent may be obtained for five cents each, ,byaddressing the Commssionerof Patents,

" i f Washington, D. U. Y

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